Waterlproofing compound for cement, concrete, and the like.



lE RANK B. STEHM, OF DES MOINES, IOWA, ASSIGNOR 'JJO ENAMEL CONCRETE COMPANY,

- No Drawing.

0F DES MOINES, IOWA, A CORPORATION OF SOUTH DAKOTA.

WATERPROOFING COMPOUND FOR CEMENT, CONCRETE, AND THE LIKE.

To all whom it may concern: Be it knownthat' I FRANK R. STEHM, a citizen of the United tates, residin at Des Moines, in the county of Polk and tate of Iowa, have invented a new and useful Improvement in Waterproofing Compounds for Cement, Concrete, and the like, of which the following is a specification.

The object of the present invention is to provide a compound or composition of mat ter in liquid form, to be used as an admixture for cement or concrete to render 'it' c water-proof. The material is supplied, not

' as a surface dressing, but as. a component part of the structure and by permeating all parts thereof, produces special advantag'eous results. I

To make up the compositioml take the following ingredients in about the, propor-,

" oil.

' position becomes thoroughly blended and;

can be drawn off for shipment In using the composition above described,

1 to produce a water-proofed concrete, 1- proceed by first adding water 1n the propertions of about twelve parts water to one part of the compound and then I mix the fluid mlxture so produced with the cement and other materials used ordinarily in the'- production of concrete. The exact proportions of water and compound may be varied through considerable limits, but the above relation is suitable for making enamel faced product. The highly fluid character of the compound renders it particularly adapted for insuring an intimate mixing with the concrete materials which become thoroughly permeated with the water-proofing compound, much more so than is the case when a dryiwater-proofing is mixed with the cement, prior tothe addition of the water.

The component parts of my water-proofing compound being of greasy nature, its use facilitates the removal or release of the finished concrete blocks or bricks from the Specification of Letterslatent.

Patented June 1, 1915.

Application filed January 22, 1912. Serial No. 672,651. A

forming molds, by acting as asort of lubricant. 4 a

The concrete product produced by the use of this compound is stronger than when the compound is absent, and coloring matter when added to color the concrete,wis more fast and fixed when the waterproofingis used. Inasmuch as the water proofing here in disclosed is thoroughly a part of the body. material itself, the concrete does not take in and absorb the smut and dirt of the atmosphere nor can water permeate to effect corrosion or other changes in the concrete Also tl1e-con-- crete product when 1t carries a finished face or in its coloring matter.

will show a higher finish or polish and one of greater permanency through the use of the compound.

It is tobe understood that I do not wish to be limited to the exact proportions stated,

since these may be varied within limits to produce the water-proofing compound of my invention.

I claim:

1, The process of making water proofing- 2. The herein described water proofing compound consisting of the following ingredients in aboutthe proportions named, kerosene oil sixty gallons, spermaceti wax ten pounds and cotton seed oil two one half gallons.

3. The herein described water proofing compound for cement, concrete or the like comprising kerosene oil,'spermaceti wax-and cotton seed oil, the spermacetiwax being dissolved in the kerosene oil.

4. A process for making liquid water proofing material for cement,"consisting in mixing kerosene oil, spermaceti wax, cotton seed oil in about the proportions of sixty gallons, ten pounds andrtwo and one-half gallons, respectively, heating the mixture to about one hundred-eighty degrees Fahrenheit, whereby the same will be brought to a fluid condition and the wax dissolved in the kerosene oil.

5. A water proofing compound compris- In witness whereof, I hereunto subscribe ing the following ingredients in about the my name to tfiis specification in the pres-\ proportions named, kerosene oil sixty galence of two Witnesses.

Ions, spermaceti Wax ten pounds, cotton seed FRANK R. STEHM. 5 oil-two and one-half %a110ns; saidmixture Witnesses:

being mingled with a out twelve parts of I. E. TONE, i

water. WM. RUFFEVEN. 

